Arid
DOI10.1016/j.indcrop.2018.06.027
Blessed thistle agronomic and phytochemical response to nitrogen and plant density
Ghiasy-Oskoee, Mehdi1; AghaAlikhani, Majid1; Sefidkon, Fatemeh2; Mokhtassi-Bidgoli, Ali1; Ayyari, Mahdi3
通讯作者AghaAlikhani, Majid
来源期刊INDUSTRIAL CROPS AND PRODUCTS
ISSN0926-6690
EISSN1872-633X
出版年2018
卷号122页码:566-573
英文摘要

Aerial parts of blessed thistle (Cnicus benedictus L.) contain high amounts of phytochemicals and would be improved through varying agronomic management practices such as N rate and plant density. The objective of this study was to investigate the effect of different N fertilizer rates and plant densities on agronomic performance, photosynthetic capacity, leaf area index, carbon to N ratio (C/N), cnicin content, total phenol and fiavonoids, and antioxidant activity in blessed thistle. A two-year field experiment was conducted in a semi-arid region in Iran in 2013 and 2014. The experiment was arranged as a randomized complete block design with a factorial arrangement and three replicates. Treatments consisted of four N rates (0, 50, 100 and 150 kg N ha(-1)) combined with five plant densities (5, 10, 15, 20 and 25 plants m(-2)). Total chlorophyll and straw N contents as well as photosynthesis rate significantly increased by either 50 or 100 kg N ha(-1). The significant reductions of straw N in 2013 and photosynthesis rate in both years were found with increasing plant density. Total phenol, fiavonoid contents, C/N ratio and antioxidant activity were decreased as a result of increased N rate. The highest cnicin contents and yields were obtained from high plant densities under low N rates. This response may be attributed to N and plant density compensation effect. The enhancement in secondary metabolites and antioxidant activity were associated with high C/N ratio and low N contents, and accompanied by a decrease in chlorophyll content that showed a positive correlation with photosynthesis and biomass yield. The study demonstrates that increasing plant density ( > 15 plants m(-2)) with a low N rate (50 kg N ha(-1)) could be suitable for both biomass and phythochemichal production of blessed thistle. Furthermore, this study suggests that blessed thistle has the ability to achieve higher biomass and yield of cnicin in poor soils and unfavorable conditions.


英文关键词Blessed thistle Cnicin yield Nutrition and plant density Primary and secondary metabolites HPLC
类型Article
语种英语
国家Iran
收录类别SCI-E
WOS记录号WOS:000442067300067
WOS关键词RADIATION USE EFFICIENCY ; ZEA-MAYS L. ; SECONDARY METABOLITES ; SESQUITERPENE LACTONES ; ANTIOXIDANT PROPERTIES ; SUMMER MAIZE ; YIELD ; GROWTH ; FERTILIZATION ; CNICIN
WOS类目Agricultural Engineering ; Agronomy
WOS研究方向Agriculture
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/210045
作者单位1.Tarbiat Modares Univ, Dept Agron, Fac Agr, POB 14115-336, Tehran, Iran;
2.Res Inst Forests & Rangelands, POB 13185-116, Tehran, Iran;
3.Tarbiat Modares Univ, Dept Hort Sci, Fac Agr, POB 14115-336, Tehran, Iran
推荐引用方式
GB/T 7714
Ghiasy-Oskoee, Mehdi,AghaAlikhani, Majid,Sefidkon, Fatemeh,et al. Blessed thistle agronomic and phytochemical response to nitrogen and plant density[J],2018,122:566-573.
APA Ghiasy-Oskoee, Mehdi,AghaAlikhani, Majid,Sefidkon, Fatemeh,Mokhtassi-Bidgoli, Ali,&Ayyari, Mahdi.(2018).Blessed thistle agronomic and phytochemical response to nitrogen and plant density.INDUSTRIAL CROPS AND PRODUCTS,122,566-573.
MLA Ghiasy-Oskoee, Mehdi,et al."Blessed thistle agronomic and phytochemical response to nitrogen and plant density".INDUSTRIAL CROPS AND PRODUCTS 122(2018):566-573.
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